Tire-mold.



- E. G. HULSE.

TIRE MOLD. 7 APPLICATION man DEC. 11, me.

1,28 3 $1 7. latentbd Nov. 5,1918

s area 'rcaz.

EDISON G. HULSE, F AKRON, OHIO, SSIC-i-NOR T0 KELLY-SPRINGFIELD TIRE COMPANY,

OF JERSEY CITY, NEW JERSEY, A CORPORATXON OF NEW JERSEY.

TIRE-MOLD.

To all whom it may concern:

Be it known that I, EDISON G. HULSE, a

'- citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Tire-Molds, of which the following is a specification. This invention relates to improvement in tire molds and more particularly to a mold for the outer casings of pneumatic tires.

V The object of the inventionis to devise a mold of the character referred to which may be employed for they purpose of molding either the casing of tires of the clencher type or tires of the straight side type byso constructing the mold that the bead portions thereof may be readily altered to conform to the type of easing being molded.

In the accompanying drawings Figure 1 is a vertical section of a mold embodying my'improv'ements, the section being on the line 1-1 of Fig. 4.

Fig. 2 is a detail in section showing one 'form of head ring.

Fi 3 is a detail in section showing anothe form of head ring.

Fig. 4. is a side elevation with one of the mold sections shown removed. I Referring to the drawings, 1 and 2 represent the respective sections of the mold, which are constructed of cast iron-or other rigid material so as to be unyielding in character, cylindrical in form, and are arwith screw-threaded openings 7 for that purpose, the heads of the screws being preferably countersunk in the sections and 2. A rigid core 8 has its shank or internal flange 9 extended between the bead rlngs 4 and 5, and rings 10 and 11 having recesses with beveled sides fitted to inclined bosses 9 on the shank of the core, and clamped thereto by the bolts 12, serve to secure the core 8 firmly in position, the outer periph- Specificatlon of Letters Patent.

- Application filed December 11, 1916. Serial No. 136,251.

Patented Nov, 5, 11918.

cries of the rings 10 and 11 being snugly fitted to the inner peripheries of the'bead rings 4 and 5 for that'purpose.

in Figs. 1 and 3 the rings 4 and 5 are shown shaped to form a bead of the clencher type, while in Fig. 2 there is showna ring 13 shaped to form a beadlof the straight side type. In either case, however, it. will be noted that the outer periphery of these rings, or those portions thereof represented by the reference character 14, form in efiect a continuation of the inner walls of the main sections 1 and 2 so as to form what is known as a rigid mold. The inner walls of the main section 1 and 2 are recessed to receive the bead ring & and 5, the recesses having outer beveled shoulders against which fit the beveled portions 15 of the bead rm s.

1% explanation of the advantages of the construction described, it may be stated that it has been customary to employ separate molds for the clencher and straight side.

types of casings, the bead portions of the mold sections being integrally formed therewith. -By the construction described it will be seen that the same' mold may be empLoyed for either type of easing by removing the bead rings and substituting others according to the particular tire being molded. One of the particular advantages in the arrangement described is. that the bead rings are connected directly to the tire sections in such a way that they will, first,

be removed from the tire casing after vulcanization. along with the main mold sections, and, secondly, they coact with the interior of themain mold section to "form a continuation of the molding chamber so as to provide a mold of the-rigid type; that is, a mold in which the walls of the molding chamber are rigid Q8 distinguished from molds having flexible walls backed up by some sort of pressure. I f

Having thus described my invention, I .clain1:

In a tire mold, two chambered rigid main mold sections, arigid bead ring directly but removably attached to each mold section,

each of said head rings being so fitted toits-main mold section as to form a continua- .tion of the interior wall thereof, a rigid core coacting with said main mold sections and said bead rlngs to form a molding chamber,

,3 an innar periphemHy-ex-- in liiSd. between said bead. rings Md this it-h day of Dec. 1916. gee/ting beyond the inner perinheries EDXSUN G. HULSE. 211.119, and homing rings atache "s0 k snugly t0 the interim 501m 0. Bless ring.

Mneny whereof, I have heremlm set 

